1. Department of Internal Medicine, Geriatric Medicine, Palliative
Medicine and Diabetology, medius Klinik Ostfildern-Ruit and Nürtingen,
Germany
2. Department of Geriatric Medicine, Agaplesion Diakonieklinikum Hamburg,
Germany
3. Department of Cardiology, Angiology and Pneumology, University Hospital
of Heidelberg, Germany